Home / 1,216,616.49-1,678,907.03-672,771.69

Finding the Fourth Proportional to 1,216,616.49, 1,678,907.03 and 672,771.69

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Solution

The fourth proportional to 1,216,616.49, 1,678,907.03 and 672,771.69 is: 928,411.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,216,616.49 : 1,678,907.03 = 672,771.69 : x
  2. Step 2: Convert to fraction form
    1,216,616.49/1,678,907.03 = 672,771.69/x
  3. Step 3: Cross multiply
    1,216,616.49x = 1,678,907.03 × 672,771.69
  4. Step 4: Simplify right side
    1,216,616.49x = 1,129,521,116,562.12
  5. Step 5: Solve for x
    x = 1,129,521,116,562.12/1,216,616.49
  6. Step 6: Final answer
    x = 928,411.81

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.